This is a simple script I put together to automate the monotonous - and potentially dangerous - process of updating your jails to stay in sync with their host system. This is the only purpose the script serves; it is not intended to be a comprehensive jail management utility (like ezjail, for example). Please use it only if you understand what it is doing. It performs a few basic sanity checks, but if you were to provide weird directory data to MYJAILS1 you could get into serious trouble.